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GB/T 32550-2016 English PDF

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US$299.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 32550-2016: Corrosion of metals and alloys -- Determination of the critical pitting temperature under potentiostatic control
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 32550-2016	299	Add to Cart	3 days	Corrosion of metals and alloys -- Determination of the critical pitting temperature under potentiostatic control	Valid

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Basic data

Standard ID: GB/T 32550-2016 (GB/T32550-2016)
Description (Translated English): Corrosion of metals and alloys -- Determination of the critical pitting temperature under potentiostatic control
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H25
Classification of International Standard: 77.060
Word Count Estimation: 15,126
Date of Issue: 2016-02-24
Date of Implementation: 2016-11-01
Quoted Standard: GB/T 10123
Adopted Standard: ISO 17864-2005, MOD
Regulation (derived from): National Standard Announcement No
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the methods, procedures and requirements for the rapid determination of the critical pitting temperature of stainless steel with a single specimen. This standard is applicable to the determination of the critical pitting temperature of stainless steel (austenite, ferrite/austenite, ferrite) under constant potential control.

GB/T 32550-2016: Corrosion of metals and alloys -- Determination of the critical pitting temperature under potentiostatic control

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Corrosion of metals and alloys - Determination of the critical pitting temperature under potentiostatic control ICS 77.060 H25 National Standards of People's Republic of China Determination of the critical pitting temperature under constant potential corrosion control of metals and alloys (ISO 17864.2005, MOD) Issued on. 2016-02-24 2016-11-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Preface Ⅰ ... 1 Scope 1 ... 2 Normative references 1 ... 3 Terms and definitions ... 4 Principle 1 ... 5 test apparatus 2 ... 5.1 potentiostat 2 ... 5.2 electrode potential measuring instrument 2 ... 5.3 Current meter 2 ... 5.4 temperature control device 2 ... 5.5 Temperature gauge 2 ... 5.6 sample holder 2 ... 5.7 electrolytic cell 2 ... 5.8 auxiliary electrode 2 ... 5.9 reference electrode 3 ... 6 Sample 3 ... 7 relative to the temperature of the sample solution temperature calibration 3 ... 8 Test Step 3 ... 8.1 Prepare reference electrode 3 ... 8.2 Sample preparation 3 ... Prepare a solution of 8.3 3 ... 8.4 Step 4 ... 8.5 Test termination 4 ... 9 Results Evaluation 4 ... 4 10 test reports ... Appendix A (informative) Test Parameters Selection Guide 6 ... Annex B (informative) method to prevent crevice corrosion occurred 8 ... Reference electrode at 25 ℃ with respect to the standard hydrogen electrode (SHE) potential of Annex C (informative) Alternative ... 11

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard uses redrafted Law Amendment uses ISO 17864.2005 "Corrosion of metals and alloys constant critical pitting temperature measured at the potential of the control." This standard and ISO 17864.2005 technical differences and for the following reasons. --- Non-equivalent to international standards of GB/T 10123 replaced by ISO 8044.1999 (see Chapter 2); --- Respectively 06Cr17NiMo2,015Cr20Ni18Mo6CuN replaced X5CrNiMo17-12-2, X1CrNiMoCuN20-18-7 (see A.5.3). The standard proposed by China Iron and Steel Association. This standard by the National Steel Standardization Technical Committee (SAC/TC183) centralized. This standard was drafted. Iron and Steel Research Institute, Qingdao Marine Corrosion Institute of Metallurgical Industry Information Standards Institute, Qingdao Iron and Steel Research ng Detection Protection Technology Co., Ltd. The main drafters of this standard. Handong Rui, Hou Jie, Yang Zhaohui, Huanggui bridge. Determination of the critical pitting temperature under constant potential corrosion control of metals and alloys

1 Scope

This standard specifies the method for rapid determination of the critical pitting temperature of stainless steel with a single sample, steps and requirements. This standard applies to the determination of stainless steel (austenitic, ferritic/austenitic, ferritic) critical pitting temperature under potentiostatic control. Note. This standard defines the critical pitting temperature can be used as a relative indicator of the performance, for example, to compare the relative performance of different grades of stainless steel. The standard test for measuring the temperature of the service environment is not pitting occurs.

2 Normative references

The following documents for the application of this document is essential. For cited documents with dates, only the dated edition applies to this document. For undated references, the latest edition (including any amendments) applies to this document. GB/T 10123 Corrosion of metals and alloys - Basic terms and definitions (GB/T 10123-2001, eqv ISO 8044.1999)

3 Terms and Definitions

GB/T 10123 and defined by the following terms and definitions apply to this document. 3.1 critical pitting temperature CPT Under certain experimental conditions, the steady-state sample surface pitting initiation, the lowest temperature during development. 3.2 temperature ramp rate During the test, the sample rate of increase of the surface temperature. NOTE. The heating rate expressed in degrees Celsius (℃ · s-1) per second. Principle 4 4.1 The sample was exposed to the specific test environment and maintain the potential of the sample in a specified value, by heating the solution at a specific rate increase the surface temperature of the specimen. 4.2 critical pitting temperature is defined as the current density exceeds a specified sample temperature of the sample corresponding to the value of the 60s. 60s delay is to ensure that the observed increase in the current short-term peak current from the steady state pitting initiation, development, rather than metastable pitting caused. 4.3 sample holder designed to ensure that the seal between the sample and the sample holder does not occur crevice corrosion. 4.4 will be between the bulk solution and the sample temperature gradient, its magnitude depending on the shape and size of the sample, it is given in Chapter 7 of the surface temperature of the sample with respect to the solution temperature calibration methods. 4.5 heating rate, the test environment, and given the potential varies with the material, austenitic stainless steel, and other test parameters Selection Guide Appendix A. 4.6 Test method defines critical pitting temperature, just as the relatively performance indicators. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 32550-2016_English be delivered?

Answer: Upon your order, we will start to translate GB/T 32550-2016_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 32550-2016_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 32550-2016_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.